MotoService Log
Jawa 250 / 350 (Kyvacka, 'Californian')
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Jawa · Two-stroke single, premix, chain drive

250 / 350 (Kyvacka, 'Californian')

Library entry covers 1948-1984

16 factory 55 guideline

Published source

Jawa Owner's Handbook 250 559/04 and 350 360/00, Lubrication Chart

Factory owner's handbook. Covers 250 type 559/04 and 350 type 360/00.

71 items for a 1954 model, grouped by interval the way a factory chart is laid out.

How this bike is built (what the schedule is based on)
Engine cycle
Two-stroke
Engine lubrication
Two-stroke premix (oil in fuel)
Oil filtration
None (no filter)
Valve gear
None (two-stroke porting)
Ignition
Magneto (incl. magdyno, flywheel magneto)
Charging
Alternator / stator with rectifier
Battery
Wet cell (flooded lead-acid, needs topping up)
Fuel system
Single carburetor
Cooling
Air / oil cooled
Primary drive
Gear or chain inside engine, shares engine oil
Gearbox oil
Separate gearbox oil
Clutch control
Hand lever, cable
Final drive
Chain
Front suspension
Telescopic fork
Rear suspension
Swingarm, twin shocks
Front brake
Drum (or band / stirrup)
Rear brake
Drum (or band / belt rim)
Wheels
Spoked, tubed
Sidecar
No sidecar
Maintenance schedule

1954 Jawa 250 / 350 (Kyvacka, 'Californian')

On the road: every 150 mi

1 item
  • Check two-stroke oil tank / carry premix oil
    Pre-ride / on the road
    Guideline

    Running a two-stroke out of oil seizes it. Injection bikes: check the tank. Premix: carry oil and a measure.

On the road: every 300 mi

3 items
  • Check lights, horn, brake light switches
    Pre-ride / on the road
    Guideline
  • Check tire pressures
    Pre-ride / on the road
    Guideline
  • Lubricate drive chain
    Pre-ride / on the road
    Guideline

    Lube warm, ideally at the end of the riding day so it soaks in overnight. Sooner after rain.

On the road: every 500 mi

1 item
  • Walk-around: check nuts and bolts for vibration loosening
    Pre-ride / on the road
    Guideline

    Old machines shake things loose: exhaust nuts, mudguard stays, footrests, tank mounts, battery strap.

On the road: every 600 mi

1 item
  • Check chain slack and rear wheel alignment
    Pre-ride / on the road
    Guideline

On the road: every 1,000 mi

1 item
  • Check road kit: plugs, points file, master link, tube patches, wire, tape
    Pre-ride / on the road
    Guideline

Every 300 mi

1 item
  • Lubricate control cables and lever pivots
    Controls and cables
    Factory

    Manual: Control lever pins (front brake, clutch). Factory: Lubrication chart p.30

Every 600 mi

2 items
  • Check gearbox oil level
    Primary and gearbox
    Factory

    Manual: Gearbox (topping up). Factory: Lubrication chart p.30

  • Clean drive chain thoroughly (remove and soak, re-lube)
    Final drive
    Factory

    Manual: Rear (secondary) chain. Factory: Chart p.30; p.32: remove, wash in paraffin, soak in warm grease

Every 1,000 mi or 1 month

1 item
  • Check battery electrolyte, top up with distilled water
    Ignition and electrics
    Guideline

    Wet-cell batteries on old machines need regular topping up, more in hot weather.

Every 1,000 mi or 6 months

6 items
  • Inspect, clean and gap spark plugs
    Engine
    Guideline
  • Grease swingarm pivot
    Rear suspension and frame
    Guideline
  • Adjust front drum brake
    Brakes
    Guideline
  • Adjust rear drum brake and rod / cable linkage
    Brakes
    Guideline
  • Check spoke tension and wheel true
    Wheels and tires
    Guideline
  • Inspect tire tread, sidewalls and date codes
    Wheels and tires
    Guideline

Every 1,500 mi or 6 months

1 item
  • Clean / inspect air filter
    Fuel and air
    Guideline

    Mesh or oiled foam: clean and re-oil. Paper: blow out or replace. Some very early machines have no filter at all.

Every 1,500 mi or 12 months

1 item
  • Adjust clutch free play, lubricate cable and lever pivot
    Primary and gearbox
    Guideline

Every 1,900 mi

3 items
  • Twist grip
    Engine
    Factory

    Factory: As printed: 1,900 (3,000) miles (km) covered; point No. 8, total 1; Castrolease CL or Castrolease LM, Shell Retinax A, Mobilgrease No 2 or MP

  • Clean and gap contact breaker points, oil cam felt
    Ignition and electrics
    Factory

    Manual: Contact breaker arm pins and contact breaker felt. Factory: Lubrication chart p.30; oil pins, grease felt (p.32)

  • Lubricate speedometer / tachometer cables, check drive
    Controls and cables
    Factory

    Manual: Speedometer drive. Factory: Lubrication chart p.30; few drops of oil (p.32)

Every 2,000 mi or 12 months

1 item
  • Replace spark plugs (two-stroke)
    Engine
    Guideline

Every 3,000 mi or 12 months

13 items
  • Check engine mounting bolts and plates
    Engine
    Guideline
  • Check throttle cable(s) free play and return
    Fuel and air
    Guideline
  • Clean fuel tap filter / sediment bowl
    Fuel and air
    Guideline
  • Check / set ignition timing
    Ignition and electrics
    Guideline
  • Adjust clutch pushrod / clutch adjuster
    Primary and gearbox
    Guideline
  • Check chain guard, chain oiler (if fitted), rear chain case
    Final drive
    Guideline
  • Inspect chain and sprockets for wear (measure stretch)
    Final drive
    Guideline
  • Check steering damper (friction or hydraulic)
    Front end
    Guideline
  • Check steering head bearing adjustment
    Front end
    Guideline
  • Inspect fork seals, stanchions and fork boots
    Front end
    Guideline
  • Check footrests, pegs, rear brake and gear lever pivots
    Rear suspension and frame
    Guideline
  • Grease and check center / side stand and springs
    Rear suspension and frame
    Guideline
  • Check wheel bearings for play
    Wheels and tires
    Guideline

Every 3,000 mi or 2 years

1 item
  • Decarbonize exhaust ports, pipes and baffles
    Engine
    Guideline

    Two-strokes coke up the exhaust port and muffler baffles; power falls off gradually.

Every 3,000 mi

5 items
  • Change gearbox oil
    Primary and gearbox
    Factory

    Manual: Gearbox (change). Factory: Lubrication chart p.30; gearbox oil also lubricates clutch and swing arm pivot

  • Rear chainwheel bearing (lubricate)
    Final drive
    Factory

    Factory: Lubrication chart pp.30-31 (read from the page image, archive.org scan of the Jawa owner's handbook 250 559-04 and 350 360-00): grouped under the 3,000 miles (5,000 km) row that continues from p.30; Castrolease Heavy or LM, Shell Retinax A, Mobilgrease No 5. (Read from the archive.org page image of the source handbook, pp.30-31.)

  • Center stand pin (lubricate)
    Rear suspension and frame
    Factory

    Factory: Lubrication chart pp.30-31 (read from the page image, archive.org scan of the Jawa owner's handbook 250 559-04 and 350 360-00): grouped under the 3,000 miles (5,000 km) row that continues from p.30; Castrolease Heavy or LM, Shell Retinax A, Mobilgrease No 5. (Read from the archive.org page image of the source handbook, pp.30-31.)

  • Lubricate brake cam spindles, check linings and drums
    Brakes
    Factory

    Manual: Brake cams. Factory: Lubrication chart p.30

  • Control cables
    Controls and cables
    Factory

    Factory: Chart p.30; text p.32 gives 1,900-3,000 mi (3,000-5,000 km)

Every 4,000 mi or 12 months

1 item
  • Replace spark plugs
    Engine
    Guideline

Every 5,000 mi or 2 years

1 item
  • Check cylinder head bolt torque
    Engine
    Guideline

    Air-cooled iron and alloy engines can lose head bolt tension; follow your manual's sequence and whether it is done hot or cold.

Every 5,000 mi

2 items
  • Repack / replace steering head bearings
    Front end
    Factory

    Manual: Steering head bearing ball. Factory: Lubrication chart p.31; grease

  • Repack / replace wheel bearings
    Wheels and tires
    Factory

    Manual: Wheels - bearings. Factory: Lubrication chart p.31; also rear chainwheel bearing

Every 6,000 mi or 12 months

3 items
  • Clean carburetor float bowl(s), check float level and jets
    Fuel and air
    Guideline

    Ethanol fuel varnishes old carbs quickly in storage.

  • Check charging voltage and regulator / cut-out
    Ignition and electrics
    Guideline
  • Check swingarm bushes for play
    Rear suspension and frame
    Guideline

Every 6,000 mi or 2 years

3 items
  • Lubricate and check automatic advance unit
    Ignition and electrics
    Guideline
  • Magneto: clean slip ring and pickup brush, check HT lead
    Ignition and electrics
    Guideline
  • Change fork oil
    Front end
    Guideline

    Some early telescopic forks are grease filled or use very small oil quantities. Check your manual.

Every 6,000 mi

1 item
  • Inspect rear shocks for leaks and damping
    Rear suspension and frame
    Factory

    Manual: Rear dampers oil change. Factory: p.32: change after 6,000-10,000 mi (10,000-15,000 km), specialist workshop

Every 10,000 mi or 2 years

1 item
  • Compression test (or leak-down)
    Engine
    Guideline

Every 10,000 mi

1 item
  • Replace chain and sprockets (wear based)
    Final drive
    Guideline

Every 12,000 mi or 3 years

1 item
  • Replace points and condenser
    Ignition and electrics
    Guideline

Every 15,000 mi or 5 years

1 item
  • Inspect clutch plates and springs
    Primary and gearbox
    Guideline

Every 15,000 mi

1 item
  • Replace brake linings / skim drums (wear based)
    Brakes
    Guideline

Every 25,000 mi or 6 years

1 item
  • Replace swingarm bushes / bearings
    Rear suspension and frame
    Guideline

Every 25,000 mi or 10 years

1 item
  • Magneto overhaul / re-magnetize, replace capacitor
    Ignition and electrics
    Guideline

    Weak spark when hot is the classic symptom. Old capacitors fail with age, not miles.

Every 30,000 mi or 6 years

1 item
  • Rebuild forks: seals, bushes, springs
    Front end
    Guideline

Every 6 months

1 item
  • Clean battery terminals, check charge and strap
    Ignition and electrics
    Guideline

Every 12 months

1 item
  • Check speedometer / odometer against a known distance
    Controls and cables
    Guideline

    Old speedos drift with tire size and drive wear. Use phone GPS over a measured 10 miles / km.

Every 2 years

3 items
  • Inspect fuel tank for rust, sealer failure, leaks
    Fuel and air
    Guideline
  • Inspect wiring, bullet connectors and ground points
    Ignition and electrics
    Guideline
  • Inspect frame, welds and lugs for cracks
    Rear suspension and frame
    Guideline

Every 4 years

1 item
  • Replace fuel lines
    Fuel and air
    Guideline

    Old rubber and modern ethanol fuel do not mix well.

Every 6 years

2 items
  • Replace inner tubes and rim tape with tires
    Wheels and tires
    Guideline
  • Replace tires on age (regardless of tread)
    Wheels and tires
    Guideline

No interval set

2 items
  • With gas
    Engine
    Factory

    Factory: As printed: 1 to 25 (Castrol Two Stroke Oil or Castrol XL SAE 30, Shell X 100, Mobiloil TT)

  • Telescopic front fork damper oil
    Front end
    Factory

    Factory: p.31: first change at 600-900 mi, then only if dismantled

Guideline lines: Intervals here are general guidelines for the machine's era and layout, compiled for this app. They are not factory manual figures. Check your workshop manual, and edit any interval in the bike's Schedule tab.

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